參數(shù)資料
型號： PT6408
廠商： Texas Instruments, Inc.
英文描述： 1.2Vout 3A 5V-Input Adjustable Step-Down ISR
中文描述： 1.2V 3A 輸出 5V 輸入的可調(diào)節(jié)步降 ISR
文件頁數(shù)： 1/5頁
文件大?。?/td> 227K
代理商： PT6408
For assistance or to order, call
(800) 531-5782
Power Trends, Inc.
27715 Diehl Road, Warrenville, IL 60555
(800) 531-5782
Fax: (630) 393-6902
http://www.powertrends.com
24
Application Notes
Mechanical Outline
Product Selector Guide
Revised 5/15/98
PT6400
Standard Application
C
1
= Required 100μF electrolytic
C
2
= Required 100μF electrolytic
Ordering Information
PT6404
¨
= +1.5 Volts
PT6405
¨
= +3.3 Volts
PT6406
¨
= +1.8 Volts
PT6407
¨
= +2.1 Volts
PT6408
¨
= +1.2 Volts
PT6409
¨
= +2.5 Volts
PT Series Suffix
(PT1234
X
)
Case/Pin
Configuration
Vertical Through-Hole
Horizontal Through-Hole
Horizontal Surface Mount
P
D
E
Pin
1
2
3
4
5
6
7
8
9
10
11
12
Function
Do not connect
V
in
V
in
V
in
GND
GND
GND
GND
V
out
V
out
V
out
V
out
Adjust
Single-Device 5V to 3V Power
85% Efficiency
Small SIP Footprint
Adjustable Output Voltage
The PT6400 is a high performance
+5V to +3.3V, 3 Amp, 12-Pin SIP (Single
In-line Package) Integrated Switching
Regulator (ISR) designed for stand alone
(not parallelable) operation. This high-
performance ISR allows easy integration
of low-power 3.3V logic IC’s into existing
5V systems without redesigning the central
power supply. Only two external capacitors
are required for proper operation. The
output voltage is easily adjustable with one
external resistor. The PT6406,7,8 can be
used to terminate high-speed data buses
such as Futurebus (+2.1V) or the new GTL
(+1.2V) logic buses.
Please note that this product does not
include short circuit protection.
3 AMP ADJUSTABLE
INTEGRATED SWITCHING REGULATOR
P T 6 4 0 0
S e r i e s
Pin-Out Information
Note: Back surface
of product is
conducting metal.
Specifications
Characteristics
(T
a
= 25°C unless noted)
Output Current
Current Limit
Input Voltage Range
Output Voltage Tolerance
PT6400 SERIES
Min
0.1*
—
4.5
Symbols
I
o
I
cl
V
in
V
o
Conditions
4.5V
≤
V
in
≤
5.5V
V
in
= +5V
0.1A
≤
I
o
≤
3.0A
V
= +5V, I
= 3.0A
0°C
≤
T
a
≤
+70°C
4.5V
≤
V
in
≤
5.5V, I
o
= 3.0A
V
in
= +5V, 0.3
≤
I
o
≤
3.0A
V
in
= 5V, I
o
= 3.0A
I
o
step between 1.5A and 3.0A
V
o
over/undershoot
V
in
= +5V, I
o
= 1.5A
Typ
—
3.6
—
Max
3.0
5.0
5.5
Units
A
A
V
V
o
-0.05
—
V
o
+0.05
V
Line Regulation
Load Regulation
V
o
Ripple/Noise
Transient Response
with C
2
= 100μF
Efficiency
Reg
line
Reg
load
V
n
t
tr
V
os
η
—
—
—
—
—
—
—
—
—
±10
±10
66
200
200
85
74
77
63
±25
±25
165
—
—
—
—
—
—
mV
mV
mV
μSec
mV
%
%
%
%
V
o
= 3.3V
V
o
= 1.8V
V
o
= 2.1V
V
o
= 1.2V
Switching Frequency
o
4.5V
≤
V
in
≤
5.5V
0.3A
≤
I
o
≤
3.0A
500
650
800
kHz
Absolute Maximum
Operating Temperature Range
Recommended Operating
Temperature Range
Thermal Resistance
Storage Temperature
Mechanical Shock
T
a
0
—
+85
°C
T
a
Free Air Convection (40-60 LFM)
At V
in
= 5V, I
o
=2.5A
Free Air Convection (40-60 LFM)
—
Per Mil-STD-883D, Method 2002.3 , 1 msec,
Half Sine, mounted to a fixture
Per Mil-STD-883D, Method 2007.2,
20-2000 Hz, Soldered in a PC board
—
0
—
+ 70**
°C
θ
ja
T
s
—
-40
25
—
—
+125
°C/W
°C
—
500
—
G’s
Mechanical Vibration
—
15
—
G’s
Weight
*ISR will operate down to no load with reduced specifications
**See Thermal Derating chart.
Note:
The PT6400 Series requires two 100μF electrolytic or tantalum capacitors for proper operation in all applications.
—
—
6.5
—
grams
Pkg Style 300
PT6400
C2
100μF
+
COM
V
OUT
2,3,4
5,6,7,8
9,10,11
12
C1
100μF
+
V
IN
COM
R1
(V
O
UP)
R2
(V
O
DOWN)
相關(guān)PDF資料
PDF描述
PT6409 2.5Vout 3A 5V-Input Adjustable Step-Down ISR
PT6420 3A 5V-Input Adjustable Step-Down ISR Family
PT6424 1.5Vout 3A 5V-Input Adjustable Step-Down ISR
PT6425 3.3Vout 3A 5V-Input Adjustable Step-Down ISR
PT6426 1.8Vout 3A 5V-Input Adjustable Step-Down ISR
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PT6408E 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 ADJ STEP-DOWN ISR RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel
PT6408P 功能描述:REGULTR 5V/1.2V 3A SYNC 12XL VER RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT6400 標準包裝:10 系列:PT4570 類型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?36V 電壓 - 輸入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:3.3A 電源（瓦） - 制造商系列:30W 電壓 - 隔離:1.5kV（1500V） 特點:- 安裝類型:表面貼裝 封裝/外殼:19-SIP SMD 模塊 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包裝:托盤 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W
PT6409 制造商:TI 制造商全稱:Texas Instruments 功能描述:3 AMP ADJUSTABLE INTEGRATED SWITCHING REGULATOR
PT6409B 功能描述:REGULTR 2.5V 3A SYNC 12XL SMD RoHS:否 類別:電源 - 板載 >> DC DC Converters 系列:PT6400 標準包裝:10 系列:PT4570 類型:隔離 輸出數(shù):1 電壓 - 輸入（最?。?36V 電壓 - 輸入（最大）:75V Voltage - Output 1:9V Voltage - Output 2:- Voltage - Output 3:- 電流 - 輸出（最大）:3.3A 電源（瓦） - 制造商系列:30W 電壓 - 隔離:1.5kV（1500V） 特點:- 安裝類型:表面貼裝 封裝/外殼:19-SIP SMD 模塊 尺寸/尺寸:3.00" L x 1.19" W x 0.50" H（76.2mm x 30.2mm x 12.7mm） 包裝:托盤 工作溫度:-40°C ~ 85°C 效率:84% 電源（瓦特）- 最大:30W
PT6409D 功能描述:DC/DC轉(zhuǎn)換器 2.5Vout 3A 5V-Inp Adj Step-Down ISR RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
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